If you want to disk clean up Windows 10 manually, then follow this detailed guide. How to clean storage space in Windows 10? While we have discussed how to update software in Windows 10 in a separate post, for the rest of the performance issues you need to clean storage space to speed up Windows performance. The primary reasons behind it include a lot of junk files, obsolete apps & programs, virus issues, outdated software, outdated drivers, and more. Sluggish Windows performance is a common issue most users face after a period of time.

Your powerful Windows computer may start crawling over time when not taken care of properly.